There are two groups of earthworms on the sidewalk. One group is on a shady, moist area on the sidewalk, and they are moving. Th
e other group is on a very sunny, dry area of the sidewalk, and none of the worms in this group are still living. What question could be asked to investigate the reason for these observations?
A. What kinds of birds eat earthworms?
B. How do earthworms get on the sidewalk?
C. What kind of living environment do earthworms need?
C. What kind of living environment do earthworms need?<<<< that's what kind of question i would rather ask, because : all earthworm species need moist soil conditions to survive.
The correct answer among the choices provided is option A. Lung capillaries are responsible for exchanging carbon dioxide for oxygen from the air. Blood that comes from the heart gets oxygen from the alveoli. The carbon dioxide in the blood goes into the alveoli at the same time.
